I am trying to implement my own Excel activities by inheriting the ExcelInteropActivity class available in UiPath.Excel.Activities dll which is available in its NuGetPackage. I created my own project in visual studio using this dll and created a NuGet package out of that. But, my activity classes are not shown on UIPath when import my NuGet package. If, I implement using my own ExcelInteropActivity class then it is visible in UiPath.

My requirement is to use the existing ExcelInteropActivity (in UiPath.Excel.Activities) rather than creating a new.